Dr Gilberto Ungson
May I suggest PMing some of his past patients most are willing to share their experiences:
http://www.obesityhelp.com/morbidobesity/bariatric+surgeon+t estimonials+Gilberto+Ungson+mbs.html
The above link will take you to Dr. Ungson's OH page with patient reviews.
Hope this helps,
~Michelle
OH Member Services